Method of modifying non-planar electrodes

Abstract

The present invention discloses a method for modifying a non-planar electrode, in which a short-chain molecule is used as a connector. The short-chain molecule is an alcohol compound having a thiol group at both ends. Therefore, the thiol groups at both the ends of the short-chain molecule can be separately bonded to a nanoparticle and a surface of an electrode, so that a plurality of nanoparticles are arranged on a surface of a non-planar electrode.

What is claimed is: 
     
         1 . A method for modifying a non-planar electrode, wherein a short-chain molecule is used to attach nanoparticles on a non-planar electrode, and the short-chain molecule is an alcohol compound having a thiol group at both ends. 
     
     
         2 . The method for modifying a non-planar electrode according to  claim 1 , comprising the following steps:
 Step a: placing at least one electrode in a dithiol solution whose concentration is greater than 2 mM, to enable an end of a dithiol to be attached on a surface of the electrode; and   Step b: placing a plurality of nanogold particles on the electrode in Step a, to enable the other end of the dithiol to be bonded to a nanogold particle.   
     
     
         3 . The method for modifying a non-planar electrode according to  claim 2 , wherein the diameter of the nanogold particle is 1 nanometer to 50 nanometers. 
     
     
         4 . The method for modifying a non-planar electrode according to  claim 2 , wherein the nanogold particle is prepared into a solution whose concentration is between 10 wt % and 75 wt %. 
     
     
         5 . The method for modifying a non-planar electrode according to  claim 1 , wherein the electrode is a micron-sized protrusion. 
     
     
         6 . The method for modifying a non-planar electrode according to  claim 1 , wherein the electrode is hemispherical, and the diameter of the electrode is 1 micron to 20 microns. 
     
     
         7 . The method for modifying a non-planar electrode according to  claim 1 , wherein the electrode is disposed on a substrate.